It would be interesting to see a chart breaking down US life expectancy by income.

There was a study run by someone with a Japanese name - Iwaki? - at Harvard Public Health- some odd years ago that only Yves Smith and Doug Henwood, I think, noticed the existence of. Showed that the bottom third of UKers in income were healthier than the top third of USAns. In general, socialized medicine whole makes populations healthier in ways that nobody has been able to exactly put a finger on.